src/java.compiler/share/classes/javax/lang/model/util/ElementKindVisitor9.java

@@ -1,7 +1,7 @@
 /*
- * Copyright (c) 2011, 2019, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2011, 2020, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.  Oracle designates this

@@ -42,40 +42,22 @@
  * to the <code>visit<i>Xyz</i>As<i>Kind</i></code> method corresponding to the
  * first argument's kind.  The <code>visit<i>Xyz</i>As<i>Kind</i></code> methods
  * call {@link #defaultAction defaultAction}, passing their arguments
  * to {@code defaultAction}'s corresponding parameters.
  *
- * <p> Methods in this class may be overridden subject to their
- * general contract.  Note that annotating methods in concrete
- * subclasses with {@link java.lang.Override @Override} will help
- * ensure that methods are overridden as intended.
- *
- * <p> <b>WARNING:</b> The {@code ElementVisitor} interface
- * implemented by this class may have methods added to it or the
- * {@code ElementKind} {@code enum} used in this case may have
- * constants added to it in the future to accommodate new, currently
- * unknown, language structures added to future versions of the
- * Java&trade; programming language.  Therefore, methods whose names
- * begin with {@code "visit"} may be added to this class in the
- * future; to avoid incompatibilities, classes which extend this class
- * should not declare any instance methods with names beginning with
- * {@code "visit"}.
- *
- * <p>When such a new visit method is added, the default
- * implementation in this class will be to call the {@link
- * #visitUnknown visitUnknown} method.  A new abstract element kind
- * visitor class will also be introduced to correspond to the new
- * language level; this visitor will have different default behavior
- * for the visit method in question.  When the new visitor is
- * introduced, all or portions of this visitor may be deprecated.
+ * @apiNote
+ * Methods in this class may be overridden subject to their
+ * general contract.
  *
  * @param <R> the return type of this visitor's methods.  Use {@link
  *            Void} for visitors that do not need to return results.
  * @param <P> the type of the additional parameter to this visitor's
  *            methods.  Use {@code Void} for visitors that do not need an
  *            additional parameter.
  *
+ * @see <a href="ElementKindVisitor6.html#note_for_subclasses">
+ * <strong>Compatibility note for subclasses</strong></a>
  * @see ElementKindVisitor6
  * @see ElementKindVisitor7
  * @see ElementKindVisitor8
  * @since 9
  * @spec JPMS